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Percutaneous electrode array and system

a percutaneous electrode and electrode array technology, applied in the field of implantable medical electrical leads, can solve the problems of unsatisfactory invasive procedures, time-consuming and difficult procedures,

Active Publication Date: 2009-01-01
CIRTEC MEDICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about an implantable medical electrical lead that can be used to stimulate a target body site. The lead has a specific design with three electrodes: a center electrode, a right electrode, and a left electrode. The lead can be inserted into the body through a needle and positioned near the target site. The center electrode is the main stimulation point, with the right and left electrodes providing a return path for the electrical energy. The technical effect of this design is that it allows for more precise and targeted stimulation of the body, which can improve the efficacy and safety of the treatment.

Problems solved by technology

Since positioning three leads requires multiple punctures with a needle, the procedure is understandably both challenging and time consuming.
Needless to say, such invasive procedures are not desirable.

Method used

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  • Percutaneous electrode array and system
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  • Percutaneous electrode array and system

Examples

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Embodiment Construction

[0019]FIG. 1 is a generalized view of a neurological stimulation lead 10 according to the present invention. The lead 10 comprises a multi-conductor body 12 having a distal region 14 extending to a distal tip 16, a proximal region 18 extending to a proximal end 20 and an intermediate region 22 disposed between the distal and proximal regions. In one embodiment, the intermediate region 22 resides between the innermost distal and proximal electrical contacts described below. The lead body 12 can have an exterior surface or a tubular sidewall 24 formed of a polymeric material, for example, polyurethane or silicone.

[0020]The lead distal region 14 includes a number of electrodes (generally designated as 26 in FIG. 1) which may, for example, be cathodes disposed along the bottom of the lead body 12 in a spaced-apart configuration. The electrodes 26 may also be described as electrical contacts and are insertable into the human body for neurological stimulation. One exemplary use of electro...

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Abstract

Lead devices and methods for neurostimulation are described. Some of the neurostimulation leads provided have multiple, distal region electrode contacts arranged in an array capable of providing steerable spinal cord stimulation. In one use, a collapsed introducer sheath is disposed over a dilator and advanced to a spinal cord target site through a 14-gauge needle into the epidural space. The dilator is removed and the introducer is expanded to its full width. A neurological lead according to the present invention advanced through the introducer to near the target site and the introducer removed. The lead is wider than it is high and has a row of lower electrodes flanked by right and left side electrodes in groups of three. The lower electrodes serve as cathodes and the right and left electrodes are return anodes.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application claims priority from U.S. Provisional Application Ser. No. 60 / 946,701, filed Jun. 27, 2008.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention is related generally to implantable medical electrical leads. More specifically, the present invention is related to implantable neurological leads.[0004]2. Prior Art[0005]Spinal cord and other neurological stimulations by electrical leads are used for many purposes, including pain masking. One lead design that has been particularly useful is the so called “transverse tripole” electrode arrangement. This contact arrangement includes a set of three electrodes positioned transversely to the axis of the spinal cord. The center electrode is generally the cathode, with either or both of the lateral electrodes acting as return anodes. It is desirable to have multiple sets of contacts to allow for reprogramming of the system to accommodate patient m...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61N1/05
CPCA61N1/0553A61B17/3468
Inventor SWOYER, JOHN M.GAGNON, JEFF S.FARRELL, RICHARD M.
Owner CIRTEC MEDICAL CORP